linux-kernel - [PATCH] nsproxy: use put_nsproxy() in switch_task

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Message-ID: <20201115180054.GA371317@rlk>
Date:   Mon, 16 Nov 2020 02:00:54 +0800
From:   Hui Su <sh_def@....com>
To:     christian.brauner@...ntu.com, serge@...lyn.com, avagin@...nvz.org,
        0x7f454c46@...il.com, linux-kernel@...r.kernel.org
Cc:     sh_def@....com
Subject: [PATCH] nsproxy: use put_nsproxy() in switch_task_namespaces()

Use put_nsproxy() instead of '
if (atomic_dec_and_test(&ns->count)) {
	free_nsproxy(ns);
}' in switch_task_namespaces().

and remove the whitespace by the way.

Signed-off-by: Hui Su <sh_def@....com>
---
 kernel/nsproxy.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index 12dd41b39a7f..3ebfd090398a 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -173,7 +173,7 @@ int copy_namespaces(unsigned long flags, struct task_struct *tsk)
 	 * it along with CLONE_NEWIPC.
 	 */
 	if ((flags & (CLONE_NEWIPC | CLONE_SYSVSEM)) ==
-		(CLONE_NEWIPC | CLONE_SYSVSEM)) 
+		(CLONE_NEWIPC | CLONE_SYSVSEM))
 		return -EINVAL;
 
 	new_ns = create_new_namespaces(flags, tsk, user_ns, tsk->fs);
@@ -250,8 +250,8 @@ void switch_task_namespaces(struct task_struct *p, struct nsproxy *new)
 	p->nsproxy = new;
 	task_unlock(p);
 
-	if (ns && atomic_dec_and_test(&ns->count))
-		free_nsproxy(ns);
+	if (ns)
+		put_nsproxy(ns);
 }
 
 void exit_task_namespaces(struct task_struct *p)
-- 
2.29.0